<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Web聊天室</title>
    <link rel="stylesheet" href="css/common.css">
    <link rel="stylesheet" href="css/index.css">
</head>
<body>
    <div id="app" v-cloak>
        <form @submit.prevent="login()">
            <h3>聊天室登录</h3>
            <div class="row">
                <span>用户名</span>
                <input type="text" v-model="username" required>
            </div>
            <div class="row">
                <span>密码</span>
                <input type="password" v-model="password" required>
            </div>
            <div class="error-message">{{ errorMessage }}</div>
            <div class="row">
                <input type="submit" value="登录">
            </div>
            <div class="row-right">
                <a href="views/register.html">注册</a>
            </div>
        </form>
    </div>
</body>
<script src="js/util.js"></script>
<script src="js/vue.js"></script>
<script>
    let app = new Vue({
        el: "#app",
        data: {
            errorMessage: "",
            username: "",
            password: "",
        },
        methods: {
            login: function (){
              ajax({
                  method:"post",
                  url:"login",
                  contentType:"application/json",
                  body:JSON.stringify({
                        username:app.username,
                        password:app.password,
                  }),
                  callback:function(status,responseText){
                if(status!=200){
                    alert("出错了、响应状态码："+status);
                    return;
                }
                let body=JSON.parse(responseText);
                if(body.ok){
                  //跳转到消息页面
                  alert("登录成功")
                 window.location.href = "views/message.html";
                 }else{
                 //注册失败，显示错误信息
                app.errorMessage = body.reason;
                }
            }
              });
            },
        },
    });
</script>
</html>